2020 Oliver Elite II Solar Disconnect Switch?

[cowgs]

Hello

I'm new, just purchased a 2020 Elite II twin bed, Hull 612, with the factory Lithium Pro Package.

Wondering if someone might be able to educate me on the battery disconnect switch located in the street side overhead cabinet?  I thought turning the switch to off would disconnect the 12 volt system but apparently it doesn't as 12 lights stay on (maybe other 12 volt systems).  What does turn off is the solar charger charging the batteries.  

Is it correct to think the battery disconnect switch is really only a solar disconnect switch? (picture attached)

Thank you,
Craig

 

[John Dorrer]

4 minutes ago, cowgs said:

Hello

I'm new, just purchased a 2020 Elite II twin bed, Hull 612, with the factory Lithium Pro Package.

Wondering if someone might be able to educate me on the battery disconnect switch located in the street side overhead cabinet?  I thought turning the switch to off would disconnect the 12 volt system but apparently it doesn't as 12 lights stay on (maybe other 12 volt systems).  What does turn off is the solar charger charging the batteries.  

Is it correct to think the battery disconnect switch is really only a solar disconnect switch? (picture attached)

Thank you,
Craig

 

That is the solar disconnect in our 2022.

[Rolind]

Assuming you have Lithionics batteries, there is a battery shutoff switch on top of the actual battery that acts similar to a battery disconnect switch as it shuts down the batteries. I always make sure the solar switch is shut off when I shut down the batteries because I have concerns that incoming solar charging will damage the solar charge controller if the batteries are shut off. 

[cowgs]

Thank you for the information and advice.

 

[Ray Kimsey]

In 2020 Oliver did not offer lithium batteries so either you have a special model or someone has taken the camper back in to the factory for an upgrade.  The 2020s did not offer a solar disconnect or a battery disconnect.  I have modified my 2020 to add lithium and replaced a lot of the older equipment. That location does look like where the wiring from the solar panels would be located, so that would be my guess too, the solar disconnect.

 

Edited Saturday at 04:52 PM by Ray Kimsey

[Hokieman]

On 1/9/2026 at 9:23 PM, cowgs said:

I'm new, just purchased a 2020 Elite II twin bed, Hull 612, with the factory Lithium Pro Package.

Congratulations, and Welcome!   We have an early 2021 #797 with factory solar option.   There was no Lithium Pro option available at that time, it was offered on later models.   Mine was equipped from the factory with the Blue Seas solar disconnect switch as yours is.   It connects to the  Zamp 30A PWM controller mounted adjacent to it on the side wall.   There was no main battery disconnect switch.   Within a month of taking delivery of my new 2021, I replaced the factory lead-acid batteries with 2 Battle Born 100A batteries, and installed an identical Blue Seas battery disconnect switch under the street side bunk.  Cleaned up the wiring and installed MTBF fuses on the batteries, and added a Victron monitor and shunt.    I do not have (or need) an inverter, I have the factory installed Progressive Dynamics 60A charger.   The system has worked flawlessly for nearly 5 years.    You are fortunate that your  trailer was modified after manufacture by the previous owner, either as a DIY or at the factory.    I don’t see a Zamp controller on your wall, and I do see a Victron battery monitor.   Hopefully you have a Victron MPPT solar controller mounted somewhere under street side bunk, and maybe Lithionics batteries.    None of these mods were offered by Oliver Service in 2020 or 2021.   If you do have these mods, you have a terrific setup and as @Rolind mentioned, you can shut off the Lithionics batteries if needed.   You can check with Oliver Service to confirm if and when they did the work.   If you have Battle Born batteries  (a common mod for us owners at the time), Oliver Service did not do the install.   If so, I recommend you heed the advice in other threads about the safety issues with Battle Born batteries. 

Edited Sunday at 03:15 PM by Hokieman